ST. JOHN ISLAND (Oleg Alexandrov – oleg_alexandrov@abv.bg) The explorations of the wall that crossed the island continued. It was c. 1.40 m wide, built of roughly-cut stones bonded with mud and with a core of smaller stones. Fragments from tegulae, imbrices and amphorae of the 4th – 3rd centuries BC were found, while Mediaeval pottery is almost missing, which suggested that the wall is earlier than the monastery which existed from the 5th to 17th centuries. The wall was built during the Early Hellenistic period and most probably it served as a fortification. The explorations of the debris in Sector Lighthouse continued and most probably this was the place of the lighthouse that functioned during antiquity. Fragments from tegulae and imbrices, pottery and amphorae of the 4th – 3rd centuries BC were found.